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                <ol class="chapter"><li class="chapter-item expanded "><a href="DTO.html"><strong aria-hidden="true">1.</strong> DTO</a></li><li class="chapter-item expanded "><a href="Async概述.html"><strong aria-hidden="true">2.</strong> Async</a></li><li class="chapter-item expanded "><a href="Simple_vs_Async.html" class="active"><strong aria-hidden="true">3.</strong> Simple vs Async</a></li><li class="chapter-item expanded "><a href="协程.html"><strong aria-hidden="true">4.</strong> 协程</a></li><li class="chapter-item expanded "><a href="关系型对象映射框架.html"><strong aria-hidden="true">5.</strong> ORM</a></li><li class="chapter-item expanded "><a href="Monolithization.html"><strong aria-hidden="true">6.</strong> Monolithization</a></li><li class="chapter-item expanded "><a href="步骤指南.html"><strong aria-hidden="true">7.</strong> 步骤指南</a></li></ol>
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                        <h1 id="api---simple-vs-async"><a class="header" href="#api---simple-vs-async">API - Simple vs Async</a></h1>
<p><strong>Simple</strong> : 多线程+堵塞IO</p>
<p><strong>Async</strong> : 协程+非堵塞IO</p>
<h3 id="线程使用量"><a class="header" href="#线程使用量">线程使用量</a></h3>
<p><strong>Simple</strong> : 连接数 + 一根接收线程</p>
<p><strong>Async</strong> : 异步处理器 + 一根接收线程</p>
<h3 id="api区别"><a class="header" href="#api区别">API区别</a></h3>
<p><strong>Simple</strong> :</p>
<ul>
<li><code>ConnectionHandler = HttpConnectionHandler</code></li>
<li>在<code>ApiController</code> 中采用<code>ENDPOINT</code></li>
</ul>
<p><strong>Async</strong> :</p>
<ul>
<li><code>ConnectionHandler = AsyncHttpConnectionHandler</code></li>
<li>在<code>ApiController</code> 中采用<code>ENDPOINT_ASYNC</code></li>
</ul>
<h2 id="代码示例"><a class="header" href="#代码示例">代码示例</a></h2>
<h3 id="simple"><a class="header" href="#simple">Simple</a></h3>
<p><strong>Config</strong></p>
<pre><code class="language-text-x-c-src">#include &quot;oatpp/web/server/HttpConnectionHandler.hpp&quot;
#include &quot;oatpp/web/server/HttpRouter.hpp&quot;
#include &quot;oatpp/network/tcp/server/ConnectionProvider.hpp&quot;
#include &quot;oatpp/parser/json/mapping/ObjectMapper.hpp&quot;
#include &quot;oatpp/core/macro/component.hpp&quot;

class AppComponent {
public:

  //创建ConnectionProvider组建去监听端口
  OATPP_CREATE_COMPONENT(std::shared_ptr&lt;oatpp::network::ServerConnectionProvider&gt;, serverConnectionProvider)([] {
    return oatpp::network::tcp::server::ConnectionProvider::createShared({&quot;localhost&quot;, 8000, oatpp::network::Address::IP_4});
  }());

  //创建路由组件
  OATPP_CREATE_COMPONENT(std::shared_ptr&lt;oatpp::web::server::HttpRouter&gt;, httpRouter)([] {
    return oatpp::web::server::HttpRouter::createShared();
  }());
  
  //创建路由组建用于路由请求
  OATPP_CREATE_COMPONENT(std::shared_ptr&lt;oatpp::network::ConnectionHandler&gt;, serverConnectionHandler)([] {
    OATPP_COMPONENT(std::shared_ptr&lt;oatpp::web::server::HttpRouter&gt;, router); //获取路由组件
    return oatpp::web::server::HttpConnectionHandler::createShared(router);
  }());

};
</code></pre>
<p><strong>Controller</strong></p>
<pre><code class="language-text-x-c-src">ENDPOINT(&quot;POST&quot;, &quot;demo/api/json&quot;, postJson,
         BODY_DTO(Object&lt;MyDto&gt;, dto)) {
  auto dtoMessage = dto-&gt;message;
  return createResponse(Status::CODE_200, &quot;dtoMessage: &quot; + dtoMessage);
}
</code></pre>
<h3 id="async"><a class="header" href="#async">Async</a></h3>
<p><strong>config</strong></p>
<pre><code class="language-text-x-c-src">#include &quot;oatpp/web/server/AsyncHttpConnectionHandler.hpp&quot;
#include &quot;oatpp/web/server/HttpRouter.hpp&quot;
#include &quot;oatpp/network/tcp/server/ConnectionProvider.hpp&quot;
#include &quot;oatpp/parser/json/mapping/ObjectMapper.hpp&quot;
#include &quot;oatpp/core/macro/component.hpp&quot;

class AppComponent {
public:

  OATPP_CREATE_COMPONENT(std::shared_ptr&lt;oatpp::network::ServerConnectionProvider&gt;, serverConnectionProvider)([] {
    return oatpp::network::tcp::server::ConnectionProvider::createShared({&quot;localhost&quot;, 8000, oatpp::network::Address::IP_4});
  }());

  OATPP_CREATE_COMPONENT(std::shared_ptr&lt;oatpp::web::server::HttpRouter&gt;, httpRouter)([] {
    return oatpp::web::server::HttpRouter::createShared();
  }());

  OATPP_CREATE_COMPONENT(std::shared_ptr&lt;oatpp::network::ConnectionHandler&gt;, serverConnectionHandler)([] {
    OATPP_COMPONENT(std::shared_ptr&lt;oatpp::web::server::HttpRouter&gt;, router); // get Router component
    //这一步就用到了AsyncConnectionHandler
    return oatpp::web::server::AsyncHttpConnectionHandler::createShared(router);
  }());

};
</code></pre>
<p><strong>Controller</strong></p>
<pre><code class="language-text-x-c-src">ENDPOINT_ASYNC(&quot;POST&quot;, &quot;demo/api_async/json&quot;, PostJSONAsync) {

  ENDPOINT_ASYNC_INIT(PostJSONAsync)

  Action act() override {
    return request-&gt;readBodyToDtoAsync&lt;oatpp::Object&lt;MyDto&gt;&gt;(controller-&gt;getDefaultObjectMapper())
                   .callbackTo(&amp;PostJSONAsync::onBodyObtained);
  }

  Action onBodyObtained(const oatpp::Object&lt;MyDto&gt;&amp; dto) {
    return _return(controller-&gt;createResponse(Status::CODE_200, &quot;dtoMessage: &quot; + dto-&gt;message));
  }

};
</code></pre>

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